Elevator hoisting mechanism.



BEST AVAILABLE COPY Nb. 778,073. PATENTED DEC. 20, 1904.

H. ROWNTREE. I ELEVATOR HOISTING MECHANISM.

APPLICATION FILED MAR. 4, 1902. N0 MODEL.

GSHZJETS-SHEBT 1.

SEST AVAELABLE com H. ROWNTREE. ELEVATOR HOISTING MECHANISM.

APPLIUATION IILBD MAR. 4, 1902. H0 MODEL.

PATENTED DEC. 20,1904.

6 SHEETS-SHEET 2.

BEST AVAILABLE COPa 1%. 778.073. PATENTED DEC. 20, 1904.

H. ROWNTREB. ELEVATOR HOISTING MECHANISM. APPLZOATIONIILED MAE. 4, 1902.H0 MODEL.

l3 SHEETS-SHEET 3.

BEST AVNLABLE COP No. 778,073. PATENTED DEC. 20, 1904 H. ROWNTREB.ELEVATOR HOISTING MECHANISM. APPLIOATION FILED MAR. 4, 1902. N0 MODEL.-

6 SHEETS-SBEET 4.

T AVNLABLE O PATENTED DEG. 20,1904. H. ROWNTREB.

ELEVATOR 1101mm MECHANISM.

APPLICATION FILED MAB..4,1902.

NO MODEL.

6 SHEBTS-SHEBT 5 )yfid {15/1 BEST AVAQLABLE COPi No. 778,078. PATENTEDDEG-{2.0, 1904.

I H. ROWNTBEE.

ELEVATOR HOISTING MEOHANISM. I

APPLICATION FILED MAR. 4, 1907. 7

N0 MODEL. 4 e SHEETS-SHEET e.

UNITED; I

A (-ORPORZ YIIQN OF ILLINOIS.

BESTAVAlLABLE com Patented December 20, 1904.

ILLINOIS, AssmNon 'ro Bemna'rr :oMPANr, or emeaeo, lLLlN()-IS,.

ELEVATOR HOISTING MECHANISM.

SEECIFICAIION forming part of Letters Patent 110.778.073, dated December20, 1904. Applic-atioii filed March 4,1902. Serial No. 965%.

To (all within/H m. w/l./:/'r/z,: Be it known that I, Il Anou)Ron's'rnm-l, a a citizen of the United States, residing at Chie ago, inthe countyof (look and State of illineis, have invented anew and usefulElevator i Hoisting .\'lechanism, of which the following i is aspecification. i i

This invtntion relates to elevator hoisting mechanism.--

'lh'e object of the invention is to provide a construction of elevatorhoisting mechanism which is simple and etlicient and wherein is includedmeans controllable from any landing or tioor for starting thehoisting-motor in op- 5 oration and :uttomatically arresting'the samewhen the car reaches a predetermined stopping-point. j

A further object of theinvention is to provide means whereby when themotor-control l 0 nn-chanism is set from any floor to start the car uponits travel to any desired or predetermined stoppingpoint the particularfloor to which the car is traveling or at which the car is at rest willbe indicated at each l'looror point from which the motor is controlled.

A-fnrthcr object of the invention is to pro- I vide means whereby as thecar approac-hes its predetermined st.op,-iing-point the motor will vautomatically d crease its speed/s 39 A further object of the inventionis to providea combined specdor motor controller and floor-controller.

A further object is to provide means cooperating with the motorcontroller means wherebywhen any door of the elevator-shaft or well bopen all .the other doors are locked in closed posit-ion and themotor-controlling 5 means are also lUClUKl.

7 Other objcrts of the invention will appear t more fully hereinafter.

The invention consists, substantially, in the eonstruetion, combination,location, and ar-E rangement of parts, all as willbe more fully Ihereiiialter set forth, as shown in the accomtapanying drawings, andfinallypointed out in the appended claims. a

r Referring to the accompanying t lrawings,

. controller. Fig. 4isatview in transverse st.

I troller.

and to the various views andreference-signs appearingthereon, Figure Usa view in plan, somewhatdiagrammatical, of. an elevator hoistingmechanism embodying the principles of my invention. 'Fig. 2 isabrokenview in elevation, showing the application'of my invention andthe means forcontrolli'ng the motor from any landing or stopping-point.Fig.- 3 is a broken view in end elevation; parts broken out, of thecombined motor and floor tion of the samegi Fig. 5 is a view illustrat--ing a modified form of means for controlling the motor from any desiredfloor or landing and embraced within the spirit and scope of myinvention. Fig. (his a detached detail view in'plan of the switch forcontrolling the circuits. Fig. 7 is a side elevation of the same. Fig. 8is a. broken detail view in section'on the line 8 8, Fig. 6, looking inthe direction of the arrows. Fig. 9 isa' detail view in plan of a formof switch-operating mech anism located at a floor or et'mtrolling-pointand by .which .the switch may be operated. Fig. 10 is a broken detailview of the same onv theline 10 10,'Fig.-9, lookingin thedirection otthearrows. Fig. 11 isa broken detail view on the linell 11, Fig. 10,looking in the direction of the arrows. Fig. 12 is a broken detail view,somewhatdiagrannnal-ic, ol'a portion of the combined motor and floorcon- Fig. 13 is aflbroken view, partly in elevation and partly insection, showing the application of'a combined door and motor controllerlocking means embraced in the scope of my invention. Figs. H5, 1:3, andH; are detail views in section, l igs. H and 15 being on the lines 14 l4and l5 15, respectively; of Fig. 13 and showing relative arrangement ofthe combined door and motor controller lockmg means at the variouslloors. Fig. 17 is a view in plan, somewhat diagranmnitic, illustratingthe. circuit connections,parts being broke-doll. p

The same part is designated by the same reference-sign wherever itoccurs throughout the several views.

5 geared to be rotated from the motor.

Beer avmmsrs Cops,

Referring to the accompanying drawings, 7 The strips A. and B areinterrupted interme "A designates'a motor, which may be of any suitabletype or construction. B designates the hoisting-drum; C, the car; D, thehoisting-cable, connected to the car and operating-over drum B. The drumB may be suitably geared to be driven from the motor-as, for instance,through the gear Ein a well-understood manner;

. IO The combined motor and floor controller may be of any suitable orconvenient construction and arrangement. In the particular form shown,which I have found efiicient for the purpose, it comprises a drum F,siiitably A convenient arrangement is shown wherein drum F is driventhrough gears G froma' shaft H,

receiving rotation from the shaft othoisting drum B'as, for instance,through the intermeshing gears J. Y These gears should be so relativelyproportioned as that a definite relation will exist between. therotation of the controller-cylinder Fand the hoisting-drum B. Forinstance, during the travel of the car 5 from one extreme limit of itsmovement to the other the controller-cylinder should be given a definiteand correlative number of complete rotations.

1 K designates a :holder frame or support 3 mounted to travel lengthwisewith respect to the controller-cylinder F. The travel of this support orholder lengthwise of the controller cylinder should bear adefiniterelation in speed and extent to the rotations imparted to said cylinder.

- Any convenient form of mechanism for imparting travel to the holder orsupport K may be provided. I have shown a simple arrangement whereinsaid holder, support, or ring K 4 is engaged by screw-rods L, driveln bygears M from shaft H. Mounted upon hetlder, ring, or support K are aseries of arms N O P, corresponding in numberto the number of floors orlandings at which the car is to stop. Carried by each arm N O P, butinsulated therefrom, are a series of contacts marked, respectively, A BC D'ior arm N, A B G D for arm 0, A B C D for arm P, said contacts beingalso insulated from each other.

' 5 Mounted upon the peripheral surface of cylinder F, but insulatedtherefrom, is a series of conducting-strips A B C D, corresponding innumber to the insulated contacts carried by the various arms. Thesecontact- 5 5 strips are spirally arranged upon the surface of cylinderF, as clearly indicated in Fig, 1, and in length they-bear a definiterelation to the length of travel of support or carrier K. Thesecontact-strips are continuous throughout their entire spiral length.except that strip D,ata suitable point in its length,is broken and iscross-connected to strip C, as most clearly indicated in Figs. 1 and 12,and, similarly, 0on tact-strip C is interrupted intermediate its 5length and is cross connected to strip D.

diate their length, their interrupted ends be-' ing directly connectedacross the gap in series with each other, asclearly shown in Figs. 1 and12. The interruptions in these strips should be so relatively located asthat the contacts carried by the" various arms N OP'will occupy aposition over the interruptions when the car arrives at the floor orlanding correspondihgthereto. Thus in the arrangement illustrated inEig. 1 the arm 0 is in position over the interruptions in thecylinder-strips, and consequently the car is at the floor correspondingto the arm 0, the interruptions in the strips serving to break all thecircuits con trolled by the contacts carried by said arm 0. Similarly,when the cal reaches the floor corresponding-to the arm N of thecombined motor and floor controller the interrupted space in thecontroller-strips will be brought under the contacts carried by said armN, so

as to break all the circuits controlled by said contacts, and so onthroughout all the floors and contact supportingarms. In addition to theinterruptions in the length of the contactstrips, as above explained,the strip A is in terrupted at various points on opposite sides of thefloor-controlling interruptions, as indicated in Fig. 1, thes tions ofsaid strip being connect-ed in sei'i s through resistances R. Similarly.contact-strip .O is formed in sec? tionsconnectedin series throughresistances R on.one side of the floor-controlling interruption, and onthe opposite side of said floorcontrolling interruption the strip D, towhich said strip 0 is cross-connected, is formed into.

sections coupled or connected up in series with each other through theresistances R. At one end thecylinder F is provided with a series ofconducting-rings A B (J D'. The ring D is in electrical connectionthrough a wire or other conductor f with the contactstrip C at a pointadjacent to the opposite end of the controller-cylinder.. Saidconductor-ring D is also in electrical connection through wire withstrip D at the end of the cylinder adgacent to ring D. Similarly,

IIO

ring (I is in electrical connection, as through.

wire f, with strip Gv and ring 13 is in electrical connection, throughwire f, with strip B, and ring A is in electrical connection, throughwire f, with the section of strip A next adjacent the floor-controllinginterruptions therein, asclearly indicated. The rings A and B arerespectively connected, through suitable brushes'G and wires-f f, to theterminals'of the motor-field windings, and rings CD are respectivelyconnected through similar brushes G and conductors ff'", with thebrushes of themotor-armature circuit.

Circuit 'is completed from a source of electrical pressure any suitableor convenient ance with the-principles of my invention I proposeftoemploy a switch which is controliao .switch.- In practice, however, andin accordl I g lable from any desired fioor or landing at which thc car'is to stop, or any suitable controlhng-po1nt,.and mymventioncontemoperating the switch or for completing circuit tothelmotor andlioorfcontroller. I have shown a simple arrangement embodying theseprinciples wherein I employ a switch (designated generally byreference-sign Q, Figs. 2, 6, 7, and 8) comprising an insulated plate S,upon which are mounted. conducting-strips E E respectively connected tothe main supply and return wires. Mounted upon the insulated plate S arecontacts a, 7/ c d, a 6 11", 11, t c (Pi-arranged insets correspondingto the contacts carried by the various arms N O P, &c. -E E are contactbridging-plates adapted to be moved over the sets or scries'of contactsa .11 c,. &c., to bridge the circuit therebetween and between thecontact-strips Y 1" 1 Thus the bridging-plate E" when moved intoproper,position will bridge the space between strip E and contacts a 7/ orbetween said'sstrip E and contacts a t 'or strip E and contacts a 7',according to the position to which said bridging-contact is moved.Similarly,bridging-contact E may bridge the space between contact-stripE and either pair of contacts .0 (Z,@ (Z or 0 4 according to thepositionto which said bridgingcontact maybe moved; As above indicated, each setof contacts, Z1, 6' a ll or a Z1 0 (Z or (fl/ 0 01 corresponds to afloor or landing for the car.

Consequently the position to which the bridging-contacts E E are movedcontrols the su pply of current to the floor-controller for any desiredpredetermined fioor or landing. I have shown a convenient arrangementfor actuating the switch wherein said bridging-contacts E E are carriedupon a lever E, mounted upon a shaft E said shaft being arranged toextend to or past each floor or landing, and

at each floor or landing said shaft may be provided with a lever E, bywhich said shaft may be rocked. and associated with each lever E maybeadiai-platc E", carrying indications for the various floors orlandings at which the car isto stop. "From this construction andarrangement it will be seen that the shaft E'f may be rocked from anyfloor or landing-place into position corresponding to any other floor orlanding-place and that the switch-arm E" 'will be correspondingly rockedwhen any one of'saidlcvcrs is-manipulated. It will also be seen that thelever at each floor will indicate the position to'which the switch-leveris rocked, and consequently will indicate the location of the car, thusenabling me to predetermine the point, landing, or'fioor at which thecar is to stop. If desired, the movements of the switch-arm E may beregulated by any convenient arrangement of (lash-pot, (indirated at E",'Figs. 6 and 7.)

It is obvious that many other devices may BEST AvAiLAeLE COP;

is arranged to engage over pulleys or sprocliets on the shaft ofswitch-arm E and, similarly, over sprocket-wheels or pulleys at eachfloor or landing and to which sprocket-wheels or pulleys are connectedpointers or operating-levers F, cooperating with dial-plates F", eachcarrying indications corresponding to the .various floors orlandings atwhich the car is to stop. It is obvious that many other forms'ofconstruction may-be readily devised for effecting the proper actuationof the switch from any floor-ior landing, while at the same timeindicating at each floor or landing the position to which the switchhasbeen actuated. 4

The various contacts carried by the dialnected to contacts B' B B,contacts 1/ I) b are respectively connected to contacts D D D", contactsc-c -c are respectively connected to contacts C" (J C, and contacts d (l-(l are respectively connected toconteicts A A A,

' The electrical operationwill' now be explained. It will be understoodfrom the fore going description that with the combined motor and floorcontroller in the. position shown in Fig'. 1 the car is at the floorcorrespending to arm ()-that is, in the particular arrangement illustrated in thcd rawings thccar is at the second or intermediate landingof the three landings shown. Suppose, now, it is desired for the car togo from the second to the top landing or the landing corresponding toarm N. ltwill be seen from the foregoingde, scription thatthe-particularlandingto which the caristo proceed may, be predeterminedfrom any flooror landingand the apparatusput in operation and controlledfrom any landing; 'lhcreforc the switch-arid l l" is manipulated so asto bring the bridging'contacts 1 E, l'cs]wcti\-'ely, into bridgingrelation between strip E'and contacts It I): and from strip l withcontacts c d. .Thereuponcircuit is completed as follows: l lromthcmain-supply -'strip E to bridging cont-act EZwberethe current willdivide, one part; passing to contact 10', thence to brush B, giiilGl'lCOto contact-strip B throughout its length, connection f to ring B,connection $12, the motor-field, connection f ring A, wiref", thesegment or portion of strip'A which is next .v 59, until the"-ue'xt'break "occurs, and so on,the

adjacent the interruption therein, thence through all the resistances Ronone side of said interruption to contact A, to d of the switch,bridging contact E, and return-strip 5 E; The other part of the current,which divided-at bridging-contact E, proceeds as follows: From contactb'to contact D, strip I 1), through the cross connection at theinterruption in the lengthofjsaid strip to to strip. Cf, throughconnection f, ring connection f, the motor; armature, connection f ringD, connection f to strip (3,, con:

tact C, c to return-strip Underthese conditions'the'motor starts up inthe-direction;

Y r 5 determined by the di'rectien'of flow '0f current" through thecircuits above indicated, thereby setting in rotation the hoisting-drum- 3' and also imparting rotation to the controller-cylinder F, asabove explained, and' the car prozd 'ceeds upon its travel, the variouscontactsIA'v B C? D'traveling along in constant contact withthefstrips'Af B C D, respectively; the

' entire current being carried through these strips and contacts,the'contacts carried by the'arms O P not performing any duty,- inas-Imuch as their-circuits are broken at the switch.

As the car approaches the'landing correspondeing to arm N,fand at whichit is to stop, the

brush Cl, which'islin contact with strlpC,

=will ride over the successive breaks in said s strip'and cut into thecircuit which includes said brush and strip successively, the resist'ancesR thereby slowing down the motor grad-* J'ually as said brushOapproache's the interruption in saidstrip or the point at which saidstrip is cross-connected 'to strip Di; Thus when said contact 0' is inthe position indicated in Fig.- l there is "no resistance. in. thecircuit. controlled thereby, and the-motor is 4Q-operatingatfullspeed'When, however, said brush passes over the first break in said strip C,a resistance will be cut in which would slow down themotor to someextent, andthereafter- 4 I thernotor willrcontinue to travel at reducedspecd but a uniform-speed of travel, until the next break is passed,whena further. re-

sistanceis cut in, thereby agailislow-ing down the motor -to a moregreatlyreduced spe'ed,. and the motor'coritinuesat that reduced speed spe being gradually reduced until finally the interruption in the circuitoccurs," at which point all the circuits through the various con-y tactsA 'B' C D are broken, andthe-rnoto'r' is arrested and-the car brought toa stop at the strip'Al The current passing along wire f" from the'field='has less resistance to pass through to reach brush A as sa1dbr.ush appreaches the interruption or position correi sponding'tothestopping-point. 1n the same fisf manner the operation can be-readily traced for any other stopping-point or landing for the car; butit is not believed necessary to specifically. trace out the variouscircuits for each landing-place, as they will" be readily In theoperation of elevators it is desirable to. provide means for guardingagainst acoidents due\to carelessly leaving the elevator. shaft or welldoors open In accordance with the-principles of my invention I proposeto 75. provide means wherebywhen any shailgi or? Y we" door is open allthe other Must-{well 3' as the motor-controller, are locked and reuiailooked as long as the particular door 'which is iopen-remains' open.Suh-i a result insures, martin thedoors must -be theta-ligament 'motokerr r snd. vfi ientibn also contemplates and -includefs fmeans wheiie.- bythe doors at all landings'are'locked in'clbsed position {until the motorV-controlling are set to eausethecar'tols'fi l atla ny Pattieslar-l'anding, 'and. 'then only the door-lock that particular landingisreleas'ed, 'sults may be accomplished. in many specifi ally differentways. -"As illustrative offondgo' form of mechanismforalccomplishiugthe-de- J Jf J, Each disk is providedwith'anotch16d Kin the peripheraledge thereof; adapted to receive the edge of the doorwhenthe latter; is moved toward ope'nposition, The shaft J 7 willrespectively'occupy a positionffovfer the doors when they; are closedto; orm -'.-'locks thelf for or, to prevent the same-from' ibeing openeduntil the notches Klare bro'ught into jbeso relatively arranged that] enthe shaft Eis rocked into position riug-the notch' 1 o'fon'e disk, intoplaceto perm t its correspond- "disks are out of line'withtheir doora-as will be readily understood. In the-particular 'forin' of my,invention shown, to';wh1ch,-"however,

; my? invention is not to be e p1sy vertically-sliding doors. Thuswhe'nfanydoor 1,2'0

is'open the edge thereof is receivedin the" notch of its correspohdingdisk, thereby locking shaft Eagainst rotatierrand also holding all theother disks in such positionas to-pre-' I From the foregoingdescriptionit will observed that thecylinder F, with its associ atedstrips spirally arranged upon the surfaces thereof, and the cooperatingsets ofcoi tacts, the various corresponding to the 13g comprehended "bypersons skilled in the jartl siredjobjects andasthelbestffomnin'vwhichI; 1

should be; so-f-relatively :positioned'with re- 5 f spect to the severaldoors thatth'edisks JJ'. 19S

proper, position for the doors" to.f-be" moved, n

and'the notches K of the variousdisks'should ing. door toopenthenotch'esofi all the other.

vent any other door from being opened; j ,4 135.

BEST AVAlLABLE cor:

various floors at which the car is to stop, and the interruption in thecontact-strips carried by the cylinder, together with the contactqings,constituteacombined motor, direction,

5 and speed controller, as wcllas a floor-controller, because theposition of the interruptions in the conducting-strips with reference tothe contacts'carriei l by the'various arms N 0 1, 620., determines. thepoint at which the motor-circuits are broken, and -conscq-uently thefloor'or landingat which the car is to stop.' Accessories of the switchand the means controllable from any landing or stopping-place foractuating the switch or and floor controller-may be varied throughoutawiderange in the specific details thereof without departure from thespirit or scope of the invention. It will also be observed that 2 myinvention contemplates the provision of means whereby the motor may beput intooperation to move thecar without interruption from one end orlimit of its travel to the other, .or itinay be so controlled thatthecar will stop at any predetermined intermediate stopping-point orlanding. It will also be seen thatjmy invention contemplates theprovision of automatic means independent of the stopping means forchanging the rate of movemerit of the car as it approaches certainpredetermined stopping-points, whether at the limits of its travel orintermediate points. it will also be seen that the means which effect aslowing down of the motor as the car nears the end of its travel,whether proceeding to the extreme limit of its'travel or to anyintermediatestopping-point, arc actuated automatically by thehoisting-motor. .It will also be observed that the switch; whichcontrols the 4 m0torcircuits is locked when any one of the elevatorshaft orwell doors is open and that at the same time all the other doorsare locked in their closed positions.

it is obvious that many variations and changes in the details ofconstruction and arrangement would readily occur to persons skilled inthe art and still full within the spirit and scope of my invention.therefore, to be limited or restricted to the ex- 5 act and specificdetails of construction and arrangement herein shown and described; but,Having now set forth the object and nature of my invention and aconstruction embodying the principles thereof, .what I claim as 5 5 newand useful and of my own invention, and

desire to secure by Letters Patent, is--- 1. in an elevator hoistingmechanism, a drum arranged to rotate synchronously with themovement ofthe car, conductors upon said 'drum arrangedin a pluralitv ofindependent rows or series, a brush lor each row or series, and meansfor connecting said brushes into the electric vi itgof the electricmotor, as and for the p i me set forth. 5 2. .ln an elevator hoistingmechanism, a

I do not desire I 5 for completing circuit to the combined motor drumarranged to rotate synehronousb with the movement of the car, aplurality of conductors on said drum, .a. series of brushes eooperatingtherewith, a switclnjor throwing different sets of brushes into anelectric cir cuit, and a mechanical c'onnection't'or operating saidswitch from different floors, as and for the purpose set forth.

- In an elevator hoisting mechanism, adrum arranged to rotatesynchronously with 7 5 the movement of the car, a spirally-arrangedconductor thereon having a cut-away portion, the conductor having aseries of segments at each side of the cut-away portion and resistancesinterposed between said segments, as and for the purpose set forth.

4. in an elevator hoisting mechanism, a drum arranged to rotatesynchronously with the movement of the car, a paiiof spirally-a1: rangedconductors thereon having a cut-away 5 portion, the conductors beingcross-connected at said cut-away portion, and a pair of brushescontacting respectively-with the said conductors and lying in theelectric circuit of the elevator-motor, whereby the motor is driven 9 ina direction to bring the gap in the conductors beneath the brushes, asand for the purpose set forth. 7

5. In an elevator hoisting mechanism, "a drum arranged to rotatesynchronously with the movementof the car, conductors upon said drain, aplurality of sets of brushes con- 't-acting with said conductors and asingle switch for throwing any desired set of brushes as and for thepurpose set forth. V

(i. in an elevator hoisting mechanism, a drum arranged to rotatesynchronously with the movement of the ear, conductors upon said drum, aplurality of sets of brushes con- 5 taeting with said conductors, and asingle switch operable from any floor for throwing into the electriccircuit of the elevator-motor,

any desired set of brushes into the electric circuit of theelevator-motor, as and for the purpose set forth. p

7. ln'au elevator hoisting mechanism, a

drum arranged to rotate synchronouslywith the movemcnt,of thc car,conductors upon said drum, a plurality of sets of brushes contactingwith said conductors and'a single 5 switch mechanically operable fromany floor for throwing any desired set of brushes into the electriccircuit of the elevator-motor, as

ITO

and for the purpose set forth.

8. In an elevator hoisting mechanism, a 2 drum arranged to rotatesynchronously with the movement of the car, conductors upon said drumfaplurality of sets of brushes con- -tar.ting with saidconductors andadjustably mounted upon an annular ring, whereby their 5 position withrelation lto the drum may be adjustable, as and for the purpose setforth. Q 9, in an elevator hoisting mechanism, a drum arranged to rotatesynchronously with the movement of the car, conductors thereon, 3

V saidfbrushe's andsa'id conductors, as and for i I eratihg with saidconductors,.eachset coop field-circuit of the elevator-motor and the- 1s5 sponding to the pitch of the spiral conductors.

over the resistances, and, actuating connec- 5 and means mechanicallycontrollable from any 6 I 'r'rep'za and brushes cooperating with saidconductors,

a verticalshaft adjacent tothe elevator-well, a switch controlled bysaid shaft,-and an ele-' vator-motor circuit made through said switch,

the purpose set -forth.-"

10. In an 'elevatorhoisting.;mechanism, a drum having conductorsarranged in spiral form thereon, a series-of sets 'oflbruShescooperating with a particulanconvolntihmof thespiral, anelevatorrmotor', andm'eansfor cutting the latter into anelectric'circniiiahrough the said conductorsand'any desired set of I5,.the brushes, as a nd for the purpose setforth.

11. In -an" elevator'hoisting mechanism, a drain arranged to rotatesynchronouslywith the movementfof the car, spirallyrari-angedcondu'ctorsfthere'on, one pair included in the other in thearmature-circuit, the latter conductors having cut-inresistance-segments, and

- brushes cooperatingwith thesaid conductors whereby the speedanddirection of motionjof the purpose setfforth. I p a v 12. In an elevatorhoisting mechanism, a drum arranged to rotate synchronouslywith themovement of'the car, spiral'conductors on 30 said drum, an'annnlarringsurrounding said. drum, and supportinga series of sets of brushes, apair of revolving lead-screws engaging nuts in said annular ringwherebythe latter is given an endwise movement correon the drum, as and for thepurpose set forth.

13. In an elevator hoisting mechanism, a hoisting-drum, an electricmotor therefor,and

a plurality of electric circuits including said 4 motor, and asingleelectric switch for putting a any desired circuit in connection with theelectric mains, as and for the purpose set forth.

14. In an electric hoist, a series of resistances in themotor-circuit,ia contact movable tions between the contact and thehoisting- -drum arranged to move the contact over the resistances andcut in resistance as the car or hoist nears the end of its travehas andfor the Y ourpose set forth. V g I 15. In a hoisting apparatus, a motor,a con- ,roller therefor, said controller operating to break themotor-circuits when the car reaches a predetermined stopping-pointorlanding,

floor or landing at which thepar is to stop for completingthe motor'rfillClllllS to said controller, as and for the purpose set forth.

1 In an elevator hoisting mechanism, a

0 motor, a controller for the circuits of said mo-.

tor, connections between said motor; and controller for actuating thelatter from the'former, said controller operating to automatically breakthe motor-circuits when the car 5 reaches any predeterminedstopping-point,

E VAILAB LE C Q";

and means mechanically controllable from any landing for completing themotor-circuits to said contr'oller,,as and for the purpose set forth.'17, --In an electric hoisting mechanism, a motor," circuits; therefor,a reversingspeed' and fioorcontroller arranged in said circuits,

a switch forcompleting the motor-circuits to 1 said controller, andmeans controllable from" any floor or landing at which the car is'tostopfor actuating saidswitch, as andfor the P P 56 Set forth.

18; In an elevator hoisting mehtnimat motor, a-"controller, connectionsbetween said motor'and controller forroperatin githe. latter, 7 30', I

contact-strips carried bysaid controller and arranged inthemotor-circuits} seriesof i movable contacts cooperating with saidstrips,

means forautomatically moving saidcontacts coincidently with themovement of said con trdller, a switch fox-completing the motoi cirfcnits to. said contacts, and means controllable from any floor orlanding for operating mitfthe motor-circuits to be broken when the carreaches a predetermined landing iorstop- 10o ping-point, a'switch forcompletingthe circuit of thejmotor to said contacts, and meanscontrollable-from. any landing for actuating" said switch, as andfor thepurpose set forth. 120, .In an el'evatpr hoisting mechanism, acontrol-cylinder carrying spirally-arranged contact-strips, iihoisting-motor, said strips being included .in themotor-circuits, meansactuated by saidmotorior rotating said cylinder,-"cooperating contactsarranged in sets, each set corresponding to a floor or landing at whichthe car is to stop, means for moving said contacts lengthwise of saidcylinder coincident-ly with the rotation of the latter, and I means forcompleting the motor-circuits to 5 said contacts, as and for thepurposesetforth,

21. In an elevator hoisting mechanism, a control cylinder havingspirally arranged contact-strips, a hoisting-motor, said strips beingincluded in the motor-circuits, cooperating contacts, means for movingsaid contacts lengthwise of said cylinder coincidently with the rotationof the latter, said contact-- strips being interrupted to cause the'motor-- circuits to be broken when the car reaches any .1 5

predetermined stopping-point, andmeans controllable from any floor orlanding for completingthe motor-circuits to said contacts, as and forthe purpose set forth.

an-elevator hoisting mechanism, a 39- motor, a controller-cylinderhaying spirally- 'arranged insulated conducting: strips, said stripsbeing included in the motor-circiiits and provided with interruptions,sets of cooperating contacts corresponding to the various floors.orf'landings at which the car is tostop,

:mea'n fer'inoving said sets of contacts lengthwise of the cylindercoincidently with the rotation thereof, whereby when the set ofcontactscorresponding to a particular floor at which the car istost'oplreaches the interru pted portion of ssidstrips themotor-circuits are broken, and ineans controllable from any floor orlanding for'completing the motor-circuit to said contacts, as and forthe pnrposeset forth,

23. In an electric hoisting mechanism, a. motor, a controller forcontrolling the circuits of said motor and comprising a cylinder havingspirally-arranged insulated conducting- BEST AVAILABLE CUP:

and means controllable from any floor or landing for completing themotor-circuits to said contacts, as and for the purpose set forth.

In witness whereof I have hereunto set my hand, this 27th day ofFebruary, 1902, in the presence of the subscribing Witnesses H ZAROLDROWNTREE.

Witnesses:

E. (J. SEMPLE, E. DARBY;-

